nordriver.c

基于arm嵌入式处理器的NorFlash驱动以及烧录代码,附有详细pdf中文手册

/***************************************************************************************************************************
 *filename:				nordriver.C		
 *author:				WUER xiaoj
 *create date:			2005-5-23 12:45                                                                      
 *description:	    		
 *modify history:	                                                                      
 *misc:           
 ****************************************************************************************************************************/
#include "HA_TypeDef.h"
#include <stdio.h>

ER NorFlash_idlejud(U32 address)
{
	U32 temp;
	U16 i = 0;
	U16 j = 0;
	
	*(RP)address = 0x700070;
	temp = *(RP)address;

	while( (temp & 0x800080) != 0x800080 )
	{
		for(i=0; i<0x1000; i++);
		temp = *(RP)address ;
		if(j++ >= 0x1000)
		{
			printf("It takes too many time! I can not put up with it!\n");
			return NO;
		}	
	}
	
	*(RP)address = 0xff00ff;
	
	return YES;
}

ER NorFlash_clearSR(U32 blockadd)
{
	*(RP)0x20000000 = 0x500050;
	
	if( NorFlash_idlejud(blockadd) != YES)
	{
		printf("clear SR FAIL!!\n");
		return NO;
	}
	return YES;
}


	
	
ER NorFlash_Normal(U32 address)
{
	*(RP)address = 0xff00ff;

	return YES;
}


ER NorFlash_unlock( U32 address)
{
	int i;
	
	*(RP)address = 0x600060;	
	*(RP)address = 0xd000d0;
		
	for(i=0; i<0x1000; i++);
	if(NorFlash_idlejud(address) != YES)
	{
		printf("unlock at 0x%x failed!!\n", (U16)address);
		return NO;
	}
	
	return YES;
}


ER NorFlash_bolckerase(U32 blockadd)
{
	U32 i;	
	
	*(RP)blockadd = 0x200020;
	*(RP)blockadd = 0xd000d0;
	
	for(i=0; i<0x80000; i++);
	
	if(NorFlash_idlejud(blockadd) != YES)
	{
		printf("blcokerase at 0x%x time out!\n", (U16)blockadd);
		return NO;
	}
	
	NorFlash_clearSR(blockadd);			       //Clear SR
	return YES;
}


ER NorFlash_read( U32 address)
{
	U32 i;
	
	*(RP)address = 0xff00ff;	
	i = *(RP)address;
	
	return i;
}



ER NorFlash_write( U32 address, U32 data )
{
	U32 i = 0;
	
	*(RP)address = 0x400040;
	*(RP)address = data;
	
	for(i=0; i<0x800; i++);
	if(NorFlash_idlejud(address) != YES)
	{
		printf("write at 0x%x failed!! \n", (U16)address);
		return NO;
	}

#ifdef DEBUGPRINT	
	i = *(RP)address;
	if(i != data)
	{
		printf("____write at 0x%x error!! 0x%x (real) VS 0x%x(readout)!!\n",address, i,data);
		return NO;
	}
	else 
#endif
		return YES;
}

ER check(U32 head1, U32 head2, U32 num)
{
	RP8 p1, p2;
	char data;
	int error = 0;
	
	p1 = (RP8)head1;
	p2 = (RP8)head2;
	
	
	while(num-->0)
	{
		data = *((RP8)p1++);
		
		if(data!= *((RP8)p2++))
		{
			error++;
			//printf("the copyed data is not the orignal one!!\n");
			//return NO;
		}
	}
	
	printf("the different byte is %d!!\n",error);
	
	return YES;
}